Venetian blind slat



Feb. 23, 1954 E. J. HUNTER VENETIAN BLIND SLAT Filed June 14, 1952 INVENTOR. E. J. HUNTER BY Z Patented Feb. 23, 1954 cei out a rectangularroute hole for the passage of the'lift cord" and at the same time cutting out four? rectangular cutouts that just touch at their inside corner the four cornersofthe rectangular route hole fortlie' lift cord. These four cut outs keep slats from being displaced; however, these are expensive to make and install whereas these tongues do not require the addition of any material other than the slat which is used anyway. Tongues have been used with offset lift cords which do not pass through the slats to provide lateral stability to the slat as in U. S. Patent No. 2,311,716 to Brooks Walker, but the use of tongues formed with a route hole for the lift cord that secures the ladder tape to the slat has not been used before.

Other advantages of the invention will be pointed out in the accompanying description and claims.

The invention is illustrated by way of example A i at, Sign. .i j Application June 14, 1952,, Semal-No, 2%. 8i;

@gi nts wb sirens we. were F i ht n e -tojthe ctans a i t 2 rd rbu e' 391s. 1 nd nasorne pf as at 6a.-b..8aa 1,... toward the center of the' route hole for the lift s ondi ispa tsin h variousview.

lih ..b. la s 5 wh c est Qn-., add r,run s like 22a in Fig. 2 (a bottom View). Lift ,c qrds H13 and. a s t ou h.me mine!t h '5ii n the slats and are. secured to the pqtt ail.

cord just touches the corners of the lift cord holethat is, the corners of the tongues 6 and I when they form the sides of the center route hole for the lift cord just touch the corners of the projections 50 and 5d at the ends of the cord hole to form a closure for the ladder tape rungs such as 22a when it passes under the side edges of the slat up through 80 over tongue 1 and down through M. This construction can be punched in all slats at the location of each ladder tape and lift cord and then sold with the tongues engaged by flexing the slats as is done in U. S. Patent No. 2,311,716 and deflecting the lift cord to allow the ladder rung to pass into place over its respective tongue. Two tongues are punched in each slat at each tape to engage either a right or left ladder rung location in case the ladder runs are staggered in the conventional manner or in case double ladder rungs are used, one at each side of the lift cords at each slat station. The length of the tongues should be the same as the width of the ladder rung. For example, some plastic tapes use wider ladder rungs than some woven cross rungs on woven ladder tapes.

I do not wish in any Way to limit myself to the exact details or mode of operation set forth in this specification and drawings, for it will be obvious that wide departure may be made in the way of details without departing from the spirit and scope of the invention which is set forth in the following claims.

I claim as my invention:

1. A Venetian blind slat provided with a lift cord receiving opening-intermediate opposite side edges thereof, said slat being further provided I ljflgures likefnumeralspf .reference'jrefer an zm l a e pools ll an lzrtoe ecta e with a pair of openings in laterally spaced relation for free passage of a tape rung therethrough, and edge portions of said rung receiving openings intersecting laterally spaced edge portions of said lift cord receiving opening and providing therebetween a freely flexible tongue, and the free end of said tongue defining a marginal portion of said lift cord receiving opening.

2. The structure according to claim 1 wherein said cord receiving opening is elongated transversely of the slat, and said tape rung receiving openings are elongated longitudinally of said slat and spaced apart a distance substantially equal to the length of said cord receiving opening.

3. The structure according to claim 1 wherein said slat is provided with a second pair of openings in laterally spaced relation for the free passage of a tape rung therethrough, and said pairs of openings being disposed on opposite sides of said lift cord receiving opening and intersecting spaced edge portions of said latter opening.

4. The structure according to claim 1 wherein said slat is also provided with a second pair of tape rung receiving openings, and said second pair of openings being longitudinally spaced from the first mentioned pair of openings a distance substantially equal to the width of said lift cord receiving opening and intersecting edge portions thereof.

5. A Venetian blind slat provided with a transversely elongated lift cord receiving opening, said slat being further provided with a pair of longitudinally elongated laterally spaced cut-outs providing openings for free passage of a tape rung therethrough, the adjacent edges of said cut-outs intersecting the adjacent edge of said cord recciving opening thereby providing a freely flexible tongue for engaging said rung intermediate the openings through which the rung passes, and

4 the free end of said tongue defining said adjacent edge of the cord receiving opening.

6. The structure according to claim 5, together with a second pair of longitudinally elongated laterally spaced cut-outs on the opposite side of the cord receiving opening and providing additional openings for free passage of a tape rung therethrough, the adjacent edges of said ,second pair of cut-outs also intersecting an edge of said cord receivin opening thereby providing a second freely flexible tongue, and the free ends of said tongue defining opposed edges of said cord receiving opening.

7. A Venetian blind slat provided with a transversely elongated rectangular lift cord receiving opening, a pair of laterally spaced longitudinally elongated rectangular openings at each side of said cord receiving opening for free passage of a tape rung therethrough, adjacent edges of the rung receiving openings of both pairs thereof intersecting the opposed corners of the lift cord receiving opening, thereby providing a pair of freely flexible tongues with the cord receiving opening disposed between the free ends thereof, and the rung receiving openings of the respective pairs disposed at opposite sides thereof, and a pair of rectangular slat portions free of the tongues normally closing communication between opposite ends of the lift cord receivingv opening and adjacent ends of the rung receiving openings.

E. J. HUNTER.

References Cited in the file of this patent UNITED STATES PATENTS Adler Sept. 6, 1949 

